Impenetrable and Transparent

Impenetrable

Impenetrable adjective - Being beyond one's powers to know, understand, or explain.
Usage example: the mysteries of that religion are completely impenetrable to outsiders

Transparent is an antonym for impenetrable.

Nearby Words: impenetrability, impenetrably

Transparent

Transparent adjective - Easily seen through.

Impenetrable is an antonym for transparent.

Nearby Words: transparency, transparently
Cite this Source
Transparent and Impenetrable. (2016). Retrieved 2026, August 15, from https://thesaurus.plus/related/impenetrable/transparent
Impenetrable & Transparent. N.p., 2016. Web. 15 Aug. 2026. <https://thesaurus.plus/related/impenetrable/transparent>.
Transparent or Impenetrable. 2016. Accessed August 15, 2026. https://thesaurus.plus/related/impenetrable/transparent.
Google Ngram Viewer shows how "impenetrable" and "transparent" have occurred on timeline